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Stellar Occultation by (122539) 2000 QN220 on 2025-09-10 (04:31:23 UT)

CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.


Event Details
Occultation UUID [and db] : 68735d30-ddb7-11f0-547e-0074f2dd5235 [observed] Occultation Date + Time : 2025-09-10 at 04:31:23 UT +/- 0.11 min [1] Object Designation : (122539) 2000 QN220 Star Designation : GDR3 2587041978441544832 Star Coordinates (ICRF) : RA = 01 27 00.9702, DE = +12 49 06.157 [2] Star Magnitudes : G = 11.52 mag, RP = 11.07 mag, BP = 11.79 mag Object Magnitude : V = 19.21 mag Estimated Magnitude Drop : 7.7 mag Estimated Max. Duration : 0.7 sec Speed of the shadow : 3.4 km/s Object Mean Diameter : 2.3 km (src: astorb) => apparent = 2 mas Apparent Motion : 0.2000 arcs/min @ PA = 272 deg Horizontal Parallax : 6.3190 arcs Dynamical Class : MBA Elongation to Moon & Sun : 4° (sunlit = 92%), Sun = 143° Cross-track uncertainty : 19.0 mas = 19 km = 8.34 path-width (1-sig) RUWE and duplicate source : 1.62 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#38 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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